Kemppi Master T 355 ACDC GM TIG/MMA Water Cooled Welder (400V, 3-Phase)

Kemppi Master T 355 ACDC GM Water-Cooled TIG/MMA Welder – 400V, 3-Phase

At Premier Welding we aim to offer amazing value for top quality products. The Kemppi Master T 355 ACDC GM Water-Cooled is a professional AC/DC TIG and MMA welding system delivering up to 350 amps from a 3-phase 400 V power supply. Designed for heavy-duty fabrication and industrial welding environments, this machine provides exceptional arc stability, precise control, and high-duty performance for demanding TIG welding applications.

The Master T range sets the benchmark for weld quality, usability, and energy efficiency in professional TIG welding. Smooth and reliable arc ignition, reduced noise levels in DC TIG welding, and excellent arc control ensure consistent, high-quality results from start to finish. Weld Assist technology guides welders to faster and more accurate parameter setup, even on complex jobs, improving productivity without compromising weld quality.

This water-cooled configuration, supplied with the Kemppi MasterTig Cooler, is ideal for extended TIG welding at higher currents. Water-cooled torch operation improves heat dissipation, operator comfort, and torch lifespan during continuous or high-amperage welding. As an ACDC model, the Master T 355 ACDC GM includes MAX WeldClean and DeMagnetization processes as standard, allowing electrolytic weld cleaning and removal of residual magnetism without additional equipment. Designed and manufactured in Finland, this system is built for continuous professional use.

Package Includes

• Kemppi power source
  Kemppi 4 Wheel Transport Unit w/ Cylinder Carrier
  Kemppi MasterTig Cooler water cooling unit
  7" TFT control panel (AC/DC compatible)
  Kemppi Flexlite TX 225G TIG torch – 4 m or 8m
  Earth return cable (35 mm² × 5 m)

This is ideal for:

• Industrial AC TIG welding of aluminium
  DC TIG welding of mild steel and stainless steel
  High-amperage TIG welding requiring water-cooled torch performance
  MMA (stick) welding
  Fabrication, production, and heavy industrial environments
  Continuous and high-duty welding applications

What Does it Weld?

• Aluminium (AC TIG)
  Mild steel
  Stainless steel
  Other steels suitable for DC TIG and MMA welding

Features

• Power Source – Master T 355 ACDC GM

  AC/DC TIG and MMA welding capability
  3-phase 400 V power supply
  Maximum output 350 A
  Smooth, stable arc ignition with reduced DC TIG noise
  Weld Assist for guided parameter setup
  Pulse TIG, MicroTack, and AutoCool functions
  MAX WeldClean electrolytic weld cleaning process
  DeMagnetization mode to eliminate residual magnetism
  Large 7-inch TFT colour display (panel dependent)
  Remote control compatibility (hand, foot, and on-torch options)
  Wired and Bluetooth wireless communication
  Robust, impact-resistant construction
  Designed and manufactured in Finland

• Water Cooling Unit – Kemppi MasterTig Cooler

  Dedicated water-cooling unit for TIG torches
  Designed for continuous professional TIG welding
  Improves torch cooling and operator comfort during high-current welding
   

Technical Data

• Technical Data – Power Source
  Kemppi Master T 355 ACDC GM

  Mains Connection Voltage:
  380…460 V ±10 %

  Mains Connection Phases:
  3-phase, 50/60 Hz

  Mains Connection Cable Type:
  4G, H07RN-F

  Mains Connection Cable Size:
  2.5 mm²

  Maximum Supply Current [I1max]:
  16…13 A

  Effective Supply Current [I1eff]:
  11…10 A

  Rated Maximum Input Power [S1max]:
  12 kVA

  Mains Fuse:
  16 A

  No-Load Voltage, MMA/TIG:
  75…95 V

  Idle Power:
  20 W

  Processes:
  AC TIG
  DC TIG
  MMA

  TIG Output @ +40 °C:
  350 A @ 30% duty cycle
  230 A @ 60% duty cycle
  190 A @ 100% duty cycle

  MMA Output @ +40 °C:
  270 A @ 35% duty cycle
  230 A @ 60% duty cycle
  190 A @ 100% duty cycle

  Output Range, TIG:
  5 A / 1 V … 350 A / 38 V

  Output Range, MMA:
  10 A / 10 V … 270 A / 39 V

  Power Factor:
  0.93

  Efficiency:
  86 %

  EMC Class:
  A

  Minimum Short-Circuit Power of Supply Network:
  1.7 MVA

  Stick Electrode Diameter:
  1.6 … 6.0 mm

  Recommended Generator Size:
  20 kVA

  Degree of Protection:
  IP23

  External Dimensions (L × W × H):
  544 × 205 × 443 mm

  Weight (without accessories):
  22 kg

  Standards:
  IEC 60974-1
  IEC 60974-3
  IEC 60974-10
  IEC 61000-3-12
  GB 15579.1

   
  Technical Data – Water Cooling Unit

• Kemppi MasterTig Cooler

  Supply Voltage:
  220–460 V

  Cooling Power:
  0.9 kW @ 1 l/min
  1.0 kW @ 1.6 l/min

  Tank Volume:
  3 litres

  Maximum Coolant Pressure:
  4 bar

  Idle Power Consumption:
  5 W

  Operating Temperature:
  −20 °C to +40 °C

  Protection Class:
  IP23S

  Dimensions (L × W × H):
  615 × 206 × 268 mm

  Weight (without accessories):
  12.5 kg

Why Buy the Kemppi Master T 355 ACDC GM Water-Cooled?

The Kemppi Master T 355 ACDC GM Water-Cooled, combined with the MasterTig Cooler, is built for professionals who demand high-output AC/DC TIG welding, advanced control, and reliable performance during extended welding cycles. With a powerful 350 A output, integrated MAX WeldClean, DeMagnetization, and the benefits of water-cooled torch operation, it delivers consistent, high-quality results in demanding industrial environments. Backed by a 3-year global warranty, it is a robust and future-ready TIG welding solution.